SuzukiSavage.com - Extending the life of the camchain

tbalam

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Re: Extending the life of the camchain
Reply #45 - 03/12/07 at 18:42:26

Thanks
I think I should be able to get that by putting a nut in the tensioner cavity. I am fairly sure i can get between 7 and 8mm in the tensioner itself, and then another 5 or so with a nut. Also with the spring sliding over the bolt it should act as a stabilizer to prevent excess side movement.

My original thought was to thread the whole inner tensioner cavity with a M10 or so but then i thought that that would change the tension in the spring by compressing it to much when the bolt was threaded all the way in.

If my calcs are correct i should be able to get a total throw of about 40mm and still keep 12-15mm inside the tensioner. This roughly triple the current usable life of tensioner and chain.

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1996 Mirage paint, seat lift, 2 #4 washers, 155 main, 52.5 pilot. Removed pillon, belt guard, rear blinker mod, moved battery box. K&N cone, Chain conversion 17/43 (in process). Cam tensioner mod.

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verslagen1

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Re: Extending the life of the camchain
Reply #46 - 03/12/07 at 19:37:43

Make sure the spring is a close fit with the tensioner. Check the spring by pushing it to one side in the cavity to see if there's any chance of interference with the bolt threads. Otherwise put a sleeve over the bolt. You don't want the spring locking up with the bolt causing loss of pressure on the chain.

Also, there's a good place to drill through the chain well. If you remove the third fin down up to the reinforcement rib there might a good place for the adjustment bolt. Vlier makes a pin plunger which might work well. Grin

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tbalam Full Member Offline I like my kids, but I love my bike ;) Posts: 172 Fac o' the Sn Gender:	Re: Extending the life of the camchain Reply #47 - 03/12/07 at 20:19:48 I thought of that as well. could be adjusted from the outside that way, but i reaaly balk at drilling into the cylinder. I wanted something that was cheap, and didn't required modifying the case.
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Savage_Greg Serious Thumper Alliance Member Offline Don't go around your ass to reach your elbow... Posts: 7844 SW Washington State Gender:	Re: Extending the life of the camchain Reply #48 - 03/13/07 at 08:33:25 Not a bad idea. How thick is the plunger at the bottom of the spring seat?
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Kropatchek Serious Thumper Offline Why more than 1 cylinder? Posts: 1457 Alphen a/d Rijn Netherlands Gender:	Re: Extending the life of the camchain Reply #49 - 03/13/07 at 09:37:21 @tlabam Very good idea. Why didn'd the guy in Germany think about that. Will ref. your post in the German forum. One thing I read: the tensioner piston is hardened and difficult to machine.
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tbalam

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Re: Extending the life of the camchain
Reply #50 - 03/13/07 at 12:24:44

Savage_Greg wrote on 12/31/69 at 16:00:03:

Not a bad idea. How thick is the plunger at the bottom of the spring seat?

IF my calcs are correct about 7-8mm, but i will get a true reading after i drill it. I am not going to do anything until the parts are here. No matter what though i am going to put a nut or other brace inside the plunger to help stabilize things.

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1996 Mirage paint, seat lift, 2 #4 washers, 155 main, 52.5 pilot. Removed pillon, belt guard, rear blinker mod, moved battery box. K&N cone, Chain conversion 17/43 (in process). Cam tensioner mod.

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Re: Extending the life of the camchain
Reply #51 - 03/13/07 at 18:17:38

If it's hard steel, you might have to anneal it to be able to tap threads in it. More likely it's case hardened, hard shell with a soft center. Once you part off the flat tab you'll know for sure. You might need to use an abrassive cut off wheel. If it's hard thru and thru, it will be difficult to drill, if case hardened, once thru the skin it will be normal.

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tbalam

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Re: Extending the life of the camchain
Reply #52 - 03/13/07 at 18:18:43

[quote ea. Why didn'd the guy in Germany think about that. author=Kropatchek link=board=RubberSideDown;num=1168956104;start=50#50 date=03/13/07 at 09:37:21]
the tensioner piston is hardened and difficult to machine. [/quote]

Your not joking I cant get a drill bit to do anything, and I bought bit specifically for hardened steel. Any ideas?

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1996 Mirage paint, seat lift, 2 #4 washers, 155 main, 52.5 pilot. Removed pillon, belt guard, rear blinker mod, moved battery box. K&N cone, Chain conversion 17/43 (in process). Cam tensioner mod.

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justin_o_guy Ex Member	Re: Extending the life of the camchain Reply #53 - 03/13/07 at 19:02:37 Anneal it & reharden it after drilling?
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verslagen1

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Re: Extending the life of the camchain
Reply #54 - 03/13/07 at 22:26:33

yeah you got it.
to anneal heat to red hot then cool slowly. if done in a furnace, just turn the furnace off and let it cool in the furnace. better to have some do for you if you don't know how. reharden is a little more fun. heat to red hot then quench in something, water or oil. I think if you don't know which, the choice is oil.
if you need further, let me know, I can ask. Grin

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Kropatchek Serious Thumper Offline Why more than 1 cylinder? Posts: 1457 Alphen a/d Rijn Netherlands Gender:	Re: Extending the life of the camchain Reply #55 - 03/14/07 at 06:22:09 tbalam wrote on 12/31/69 at 16:00:03: Your not joking I cant get a drill bit to do anything, and I bought bit specifically for hardened steel. Any ideas? Got an answer from Norbert. He ( Quote) tried the same set-up (as tbalam ) and it did not work.(Unquote) Don't shoot, I'm only the messenger
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tbalam Full Member Offline I like my kids, but I love my bike ;) Posts: 172 Fac o' the Sn Gender:	Re: Extending the life of the camchain Reply #56 - 03/14/07 at 16:08:25 did he give a reason by chance?
Back to top	1996 Mirage paint, seat lift, 2 #4 washers, 155 main, 52.5 pilot. Removed pillon, belt guard, rear blinker mod, moved battery box. K&N cone, Chain conversion 17/43 (in process). Cam tensioner mod. IP Logged

Savage_Greg Serious Thumper Alliance Member Offline Don't go around your ass to reach your elbow... Posts: 7844 SW Washington State Gender:	Re: Extending the life of the camchain Reply #57 - 03/14/07 at 20:51:58 Kropatchek wrote on 12/31/69 at 16:00:03: Got an answer from Norbert. He ( Quote) tried the same set-up (as tbalam ) and it did not work.(Unquote) Don't shoot, I'm only the messenger See tbalam's question?
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Kropatchek Serious Thumper Offline Why more than 1 cylinder? Posts: 1457 Alphen a/d Rijn Netherlands Gender:	Re: Extending the life of the camchain Reply #58 - 03/15/07 at 04:22:03 tbalam wrote on 12/31/69 at 16:00:03: did he give a reason by chance? No, he did not.
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Savage_Greg Serious Thumper Alliance Member Offline Don't go around your ass to reach your elbow... Posts: 7844 SW Washington State Gender:	Re: Extending the life of the camchain Reply #59 - 03/15/07 at 05:14:57 Then you have no reason not to try anyway....right?
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